PLAYER PAGE
Personal
Van Der Merwe, D (Duvan)
Chess SA id
1150147675FIDE id
?Date of birth
2015-12-11 (U12)Gender
MaleRegion
Tshwane (GTP)Citizen
RSATitles
Chess SA registered
YesLast active game
2025-12-07Personal details last changed
1900-01-01Junior GPX Games
Junior GPX Points
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| Rating | 1207.3 | 1203.3 | 1200 | 1200 |
| Raw rating | 1179.5 | 1172.2 | 1200 | 1200 |
| Weighted rating | 1207.3 | 1203.3 | 1200 | 1200 |
| Weighted performance | 1054.7 | 1052.8 | 0 | 0 |
| Floor | 746.1 | 753.1 | 700 | 700 |
| K-factor | 36 | 36 | 36 | 36 |
| Min/Max rating change allowed | 170.7 | 172.5 | 165.8 | 165.8 |
| Highest rating | 1382.22022-10-01 | 1382.12022-10-01 | 12002018-10-01 | 12002018-10-01 |
| Highest raw rating | 1246.12024-04-01 | 1253.12024-04-01 | 12002024-02-01 | 12002024-02-01 |
| Highest weighted rating | 1246.12024-04-01 | 1253.12024-04-01 | 12002018-10-01 | 12002018-10-01 |
| Highest weighted performance | 1382.22022-10-01 | 1382.12022-10-01 | 12002024-02-01 | 12002024-02-01 |
| Prediction | ||||
|---|---|---|---|---|
| Item | Main | Standard | Rapid | Blitz |
| Rating change | -2.4 | -2.7 | 0 | 0 |
| New rating | 1204.9 | 1200.6 | 1200 | 1200 |
| Analysis | ||||
| Rating | 1207.3 | 1203.3 | 1200 | 1200 |
| Raw rating | 1179.5 | 1172.2 | 1200 | 1200 |
| Weighted rating | 1207.3 | 1203.3 | 1200 | |
| Weighted performance | 1054.7 | 1052.8 | 0 | |
| K-factor | 36 | 36 | 36 | 36 |
| Floor | 746.1 | 753.1 | 700 | 700 |
| Max/Min rating change allowed | 170.7 | 172.5 | 165.8 | 165.8 |
| Games | 0 | 0 | 0 | 0 |
| Score | 0 | 0 | 0 | 0 |
| Expected score | 0 | 0 | 0 | 0 |
| Score-Expected | 0 | 0 | 0 | 0 |
| Temp raw +/- | 0 | 0 | 0 | 0 |
| Final raw +/- | 0 | 0 | 0 | 0 |
| New raw rating | 1179.5 | 1172.2 | 1200 | 1200 |
| New weighted rating | 1204.9 | 1200.6 | 1200 | 1200 |
| New weighted performance | 1047.6 | 1045.7 | 0 | 0 |
| Temp new rating | 1204.9 | 1200.6 | 1200 | 1200 |
| Temp new rating +/- | -2.4 | -2.7 | 0 | 0 |
| Final new rating +/- | -2.4 | -2.7 | 0 | 0 |
| New rating | 1204.9 | 1200.6 | 1200 | 1200 |
| New K-factor | 36 | 36 | 36 | 36 |
| New floor | 746.1 | 753.1 | 700 | 700 |
| Item | Main | Standard | Rapid | Blitz |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | |
| 36 | 36 | 0 | 0 | |
| 25 | 25 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| 5 | 5 | 0 | 0 | |
| 0 | 0 | 0 | 0 | |
| History | 66 | 66 | 0 | 0 |
| Games since | |||||||||||||||||
| Main61 | Standard61 | Rapid0 | Blitz0 | ||||||||||||||
| Gender | Male | ||||||||||||||||
| Age group | U12 | ||||||||||||||||
| Region | Tshwane (GTP) | ||||||||||||||||
| Province | Gauteng (GT) | ||||||||||||||||
| Main | RSA | Province | Region | ||||||||||||||
| Overall | 3980 | 1302 | 460 | ||||||||||||||
| Male | 3000 | 986 | 347 | ||||||||||||||
| U12 | 649 | 213 | 79 | ||||||||||||||
| U12 Male | 447 | 152 | 53 | ||||||||||||||
| Standard | RSA | Province | Region | ||||||||||||||
| Overall | 3942 | 1413 | 544 | ||||||||||||||
| Male | 2969 | 1073 | 408 | ||||||||||||||
| U12 | 633 | 237 | 94 | ||||||||||||||
| U12 Male | 438 | 167 | 63 | ||||||||||||||
| Rapid | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U12 | -1 | -1 | -1 | ||||||||||||||
| U12 Male | -1 | -1 | -1 | ||||||||||||||
| Blitz | RSA | Province | Region | ||||||||||||||
| Overall | -1 | -1 | -1 | ||||||||||||||
| Male | -1 | -1 | -1 | ||||||||||||||
| U12 | -1 | -1 | -1 | ||||||||||||||
| U12 Male | -1 | -1 | -1 | ||||||||||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 0 | 0 | 0 | 0 | 0 | 0 |
| Standard | 0 | 0 | 0 | 0 | 0 | 0 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 36 | 11 | 30.56 | -165.3 | 1355.8 | 1190.5 |
| Standard | 36 | 11 | 30.56 | -165.3 | 1355.8 | 1190.5 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| History | ||||||
| Games | Score | % | Dp | AvgOpp | Performance | |
| Main | 66 | 25 | 37.88 | -103 | 1295.2 | 1192.2 |
| Standard | 66 | 25 | 37.88 | -103 | 1295.2 | 1192.2 |
| Rapid | 0 | 0 | 0 | 0 | 0 | 0 |
| Blitz | 0 | 0 | 0 | 0 | 0 | 0 |
| Date | Main | Standard | Rapid | Blitz |
| 2026-01-01 | 1179.5 | 1172.2 | 1200 | 1200 |
| 2025-11-30 | 1221.4 | 1215.8 | 1200 | 1200 |
| 2025-11-01 | 1221.4 | 1215.8 | 1200 | 1200 |
| 2025-09-30 | 1221.4 | 1215.8 | 1200 | 1200 |
| 2025-09-01 | 1221.4 | 1215.8 | 1200 | 1200 |
| 2025-08-01 | 1207.2 | 1205.1 | 1200 | 1200 |
| 2025-07-01 | 1207 | 1205.1 | 1200 | 1200 |
| 2025-06-01 | 1220.4 | 1220.9 | 1200 | 1200 |
| 2025-05-01 | 1208.9 | 1207.4 | 1200 | 1200 |
| 2025-04-01 | 1208.9 | 1207.4 | 1200 | 1200 |
| 2025-03-01 | 1207.8 | 1206.3 | 1200 | 1200 |
| 2025-02-01 | 1209 | 1207.7 | 1200 | 1200 |
| 2025-01-01 | 1179.1 | 1170.3 | 1200 | 1200 |
| 2024-12-01 | 1179.1 | 1170.3 | 1200 | 1200 |
| 2024-11-01 | 1188.4 | 1181.5 | 1200 | 1200 |
| 2024-10-01 | 1188.4 | 1181.5 | 1200 | 1200 |
| 2024-09-01 | 1188.4 | 1181.5 | 1200 | 1200 |
| 2024-11-01 | 1213.2 | 1211 | 1200 | 1200 |
| 2024-07-01 | 1213.2 | 1211 | 1200 | 1200 |
| 2024-06-01 | 1213.2 | 1211 | 1200 | 1200 |
| 2024-05-01 | 1213.2 | 1211 | 1200 | 1200 |
| 2024-04-01 | 1246.1 | 1253.1 | 1200 | 1200 |
| 2024-03-01 | 1232.7 | 1238 | 1200 | 1200 |
| 2024-02-01 | 1234.5 | 1241.6 | 1200 | 1200 |
Comming soon.
Tournaments
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|
Last 500 tournaments since 01 January 2018
| # | Tournament | Start | End | Type | Host | Rounds | Games | Score | Cfr | Analysis |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Gauteng Inter-Region at Emerald Resort 2025 (U12 Candidates) | 2025-12-06 | 2025-12-07 | Standard | Sedibeng (GSV) | 5 | 4 | 0.5 | Yes | Analysis |
| 2 | 2025 Midstream Open Chess Tournament (U12) | 2025-08-25 | 2025-08-25 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 3 | 2025 Tshwane South School District CLOSED League Championship (U11A) | 2025-08-15 | 2025-08-15 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 4 | 2025 Etienne Lewis Closed Chess Tournament (U12) | 2025-08-08 | 2025-08-10 | Standard | Tshwane (GTP) | 7 | 7 | 3.5 | Yes | Analysis |
| 5 | 2025 Elise Steenkamp Open Chess Tournament (Bishop) | 2025-06-14 | 2025-06-15 | Standard | Tshwane (GTP) | 5 | 5 | 1.5 | Yes | Analysis |
| 6 | 2025 Tshwane South School District Individual Finals (D4) (U11 Boys) | 2025-05-10 | 2025-05-10 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 7 | 2025 KSNG Open (U12) | 2025-02-22 | 2025-02-22 | Standard | Tshwane (GTP) | 5 | 4 | 0 | Yes | Analysis |
| 8 | 2025 Tshwane Chess OPEN Registration Tournament (U12) | 2025-01-25 | 2025-01-25 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 9 | Lardies Ope 2024 (U10) | 2024-10-26 | 2024-10-26 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 10 | D4 Tshwane South District Schools Teams Chess Tournament 2024 (U9A) | 2024-08-03 | 2024-08-03 | Standard | Tshwane (GTP) | 5 | 5 | 1 | Yes | Analysis |
| 11 | 2024 Silver Lakes Open Chess Tournament (E) | 2024-04-20 | 2024-04-20 | Standard | Tshwane (GTP) | 5 | 5 | 2 | Yes | Analysis |
| 12 | 2024 Chris Greyling Open Chess Tournament (E) | 2024-03-16 | 2024-03-16 | Standard | Tshwane (GTP) | 5 | 5 | 3 | Yes | Analysis |
| 13 | 2024 Constantiapark Open (E) | 2024-02-17 | 2024-02-17 | Standard | Tshwane (GTP) | 5 | 5 | 2.5 | Yes | Analysis |
| 14 | Lardies Tournament 2022 (U8) | 2022-10-29 | 2022-10-29 | Standard | Tshwane (GTP) | 5 | 5 | 3.5 | Yes | Analysis |
Top 3 Streaks
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 7 | TournamentLardies Tournament 2022 | Tournament2024 Constantiapark Open | ||||||
| date2022-10-29 | rnd1 | typeStandard | result0.5 | date2024-02-17 | rnd2 | typeStandard | result0.5 | ||
| OpponentFourie, E (Ernest) | OpponentSwart, E (Eben) | ||||||||
| 2 | 3 | Tournament2025 Elise Steenkamp Open Chess Tournament | Tournament2025 Etienne Lewis Closed Chess Tournament | ||||||
| date2025-06-15 | rnd5 | typeStandard | result0.5 | date2025-08-09 | rnd2 | typeStandard | result1 | ||
| OpponentHaupt, N (Nia) | OpponentFourie, M (Marchant) | ||||||||
| 3 | 3 | Tournament2024 Constantiapark Open | Tournament2024 Chris Greyling Open Chess Tournament | ||||||
| date2024-02-17 | rnd5 | typeStandard | result1 | date2024-03-16 | rnd2 | typeStandard | result1 | ||
| OpponentKgwale, I (Itumeleng) | OpponentMotumi, T (Tsepe) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 7 | TournamentLardies Tournament 2022 | Tournament2024 Constantiapark Open | ||||||
| date2022-10-29 | rnd1 | typeStandard | result0.5 | date2024-02-17 | rnd2 | typeStandard | result0.5 | ||
| OpponentFourie, E (Ernest) | OpponentSwart, E (Eben) | ||||||||
| 2 | 3 | Tournament2025 Elise Steenkamp Open Chess Tournament | Tournament2025 Etienne Lewis Closed Chess Tournament | ||||||
| date2025-06-15 | rnd5 | typeStandard | result0.5 | date2025-08-09 | rnd2 | typeStandard | result1 | ||
| OpponentHaupt, N (Nia) | OpponentFourie, M (Marchant) | ||||||||
| 3 | 3 | Tournament2024 Constantiapark Open | Tournament2024 Chris Greyling Open Chess Tournament | ||||||
| date2024-02-17 | rnd5 | typeStandard | result1 | date2024-03-16 | rnd2 | typeStandard | result1 | ||
| OpponentKgwale, I (Itumeleng) | OpponentMotumi, T (Tsepe) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | Tournament2024 Constantiapark Open | Tournament2024 Chris Greyling Open Chess Tournament | ||||||
| date2024-02-17 | rnd5 | typeStandard | result1 | date2024-03-16 | rnd2 | typeStandard | result1 | ||
| OpponentKgwale, I (Itumeleng) | OpponentMotumi, T (Tsepe) | ||||||||
| 2 | 2 | Tournament2025 Tshwane South School District Individual Finals (D4) | Tournament2025 Tshwane South School District Individual Finals (D4) | ||||||
| date2025-05-10 | rnd2 | typeStandard | result1 | date2025-05-10 | rnd3 | typeStandard | result1 | ||
| OpponentWeyer, E (Evan) | OpponentDu Plessis-Pavlovic, L (Logan) | ||||||||
| 3 | 2 | Tournament2025 Tshwane Chess OPEN Registration Tournament | Tournament2025 Tshwane Chess OPEN Registration Tournament | ||||||
| date2025-01-25 | rnd2 | typeStandard | result1 | date2025-01-25 | rnd3 | typeStandard | result1 | ||
| OpponentVounatsos, L (Levi) | OpponentBarnes, D (Derek) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | Tournament2024 Constantiapark Open | Tournament2024 Chris Greyling Open Chess Tournament | ||||||
| date2024-02-17 | rnd5 | typeStandard | result1 | date2024-03-16 | rnd2 | typeStandard | result1 | ||
| OpponentKgwale, I (Itumeleng) | OpponentMotumi, T (Tsepe) | ||||||||
| 2 | 2 | Tournament2025 Tshwane South School District Individual Finals (D4) | Tournament2025 Tshwane South School District Individual Finals (D4) | ||||||
| date2025-05-10 | rnd2 | typeStandard | result1 | date2025-05-10 | rnd3 | typeStandard | result1 | ||
| OpponentWeyer, E (Evan) | OpponentDu Plessis-Pavlovic, L (Logan) | ||||||||
| 3 | 2 | Tournament2025 Tshwane Chess OPEN Registration Tournament | Tournament2025 Tshwane Chess OPEN Registration Tournament | ||||||
| date2025-01-25 | rnd2 | typeStandard | result1 | date2025-01-25 | rnd3 | typeStandard | result1 | ||
| OpponentVounatsos, L (Levi) | OpponentBarnes, D (Derek) | ||||||||
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Games | Start | End | ||||||
|---|---|---|---|---|---|---|---|---|---|
Top 10 opponents most often played
| # | Opponent | Main | Standard | Rapid | Blitz | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | Gms | Score | Dp | ||
| Aor | Prat | Aor | Prat | Aor | Prat | Aor | Prat | ||||||
| 1 | Li ,J (Jiming) | 3 | 0 | -425 | 3 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1360.4 | 935.4 | 1358.9 | 935.4 | 0 | 0 | 0 | 0 | ||||||
| 2 | Venter ,S (Stephan) | 2 | 2 | 425 | 2 | 2 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1136.1 | 1561.1 | 1127.6 | 1561.1 | 0 | 0 | 0 | 0 | ||||||
| 3 | Dixon ,G (Genevieve) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1285.3 | 1285.3 | 1284.6 | 1285.3 | 0 | 0 | 0 | 0 | ||||||
| 4 | Kleynhans ,M (Magnus) | 2 | 0 | -425 | 2 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1599.3 | 1174.3 | 1596.1 | 1174.3 | 0 | 0 | 0 | 0 | ||||||
| 5 | Vosloo ,L (Leja) | 2 | 1 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1370.7 | 1370.7 | 1368.4 | 1370.7 | 0 | 0 | 0 | 0 | ||||||
| 6 | Swart ,E (Eben) | 1 | 0.5 | 0 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1338 | 1338 | 1300.8 | 1338 | 0 | 0 | 0 | 0 | ||||||
| 7 | Strecker ,C (Cael) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1268.1 | 843.1 | 1257.4 | 843.1 | 0 | 0 | 0 | 0 | ||||||
| 8 | De Klerk ,A (Amelia) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1163 | 1588 | 1154 | 1588 | 0 | 0 | 0 | 0 | ||||||
| 9 | Mkotong ,R (Reagile) | 1 | 0 | -425 | 1 | 0 | -425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1528.7 | 1103.7 | 1529.2 | 1103.7 | 0 | 0 | 0 | 0 | ||||||
| 10 | Vounatsos ,L (Levi) | 1 | 1 | 425 | 1 | 1 | 425 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1245 | 1670 | 1247.7 | 1670 | 0 | 0 | 0 | 0 | ||||||
Norms
| # | Norm | Tournament | Start | End | Rounds | Games | Score | Details |
|---|---|---|---|---|---|---|---|---|